BLACKMAILING

Hi all. there is someone out there posting adverts on the internet dating sites (ads Africa) using my name and pictures that are comprising in nature. he even discloses my contact number as if I am the one posted that advert. I am now afraid that if my family of husband can find out about that he will think that its true I am doing those things. and some of the pictures are not mine but they are comprising in nature. he is using this number : 071 186 1631, POLY POLY his name (according to true caller) and he said he is a friend to DUMISA (know as COSMO) by his friends. please help me expose this criminals.